Electronics Repair

Faulty USB sound card (U71-SW)

I recently purchased a cheap USB sound card off E-bay (U71-SW). It is white in colour and has a short cable with a USB...

2 comments posted 13yrs

posted by M.Joshi.bbb2609

2 comments posted 13yrs posted by M.Joshi.bbb2609

Vox VT100 DSP amp, 2008

Loss of bass output, low level compared to mid and treble input test signals. Altering bass pot makes little difference...

2 comments posted 13yrs

posted by diverse

2 comments posted 13yrs posted by diverse

Tek 545B O'scope Fuse and Power

So, I recently got a Tektronics 545B oscilloscope. It's been sitting in a b asement for god knows how long, and I thoug...

44 comments posted 13yrs

posted by noeltkeith

44 comments posted 13yrs posted by noeltkeith

Visible Condition of Arc Lamp Small 25W Flashlight Xenon Deterioration

Are there visible indications such as internal metallic stains or other signs of deterioration in small arc lamps? I du...

8 comments posted 13yrs

posted by wb_wildbill

8 comments posted 13yrs posted by wb_wildbill

Dissembly Of Ryobi Battery?

viz: http://tinyurl.com/c788h7k I'm guessing this thing has a weak cell and Home Depot doesn't want to hear about it. I...

14 comments posted 13yrs

posted by x

14 comments posted 13yrs posted by x

Adcom parts needed (GFP-1A & GFT-1A)

Hello all, I've got 2 vintage Adcom repairs here that I need parts for. Anyone got any parts units around? One is a GFP...

4 comments posted 13yrs

posted by tim

4 comments posted 13yrs posted by tim

Fender Passport PAs

** Is anyone here unfortunate enough to have experience servicing Fender Passports ? In particular, the Passport PD250....

4 comments posted 13yrs

posted by phil_a

4 comments posted 13yrs posted by phil_a

I never cease to be amazed ...

Guy that I know brought me a Polytone Mini Brute to look at earlier this week. He reckoned that it hummed, but otherwis...

1 comments posted 13yrs

posted by arfa.daily

1 comments posted 13yrs posted by arfa.daily

Belden 8218 Mini RG-59 75 Ohm Video Coaxial Cable Substitute Equivalent

I've been searching without sucess to find another designation for Belden 8218 mini coax cable. I did find General Cabl...

6 comments posted 13yrs

posted by wb_wildbill

6 comments posted 13yrs posted by wb_wildbill

zener diode question

I need to come up with a zener diode that will handle 1.0 amp of current at 12V. I currently am using two 6.8V 10 watt...

21 comments posted 13yrs

posted by captainvideo462009

21 comments posted 13yrs posted by captainvideo462009

Amp Repair - Stuck to negative Rail

Hello! I have to repair an old Cabotron amplifier. The amp is a common class A-B, with MJ15015 e MJ15016 power transist...

3 comments posted 13yrs

posted by bigground

3 comments posted 13yrs posted by bigground

Heathkit IM-105 Schematic & Cal Info Needed

I am looking for the schematic and calibration instructions for my Weston 660 / Heathkit IM-105 Multimeter so I can rep...

13 comments posted 13yrs

posted by radiotek.baf3d00

13 comments posted 13yrs posted by radiotek.baf3d00

Help: Hougen Magnetic Drill Problem

I have a Hougen Magnetic Drill that is not working. http://i290.photobucket.com/albums/ll257/Statenislander/Tools/Houge...

18 comments posted 13yrs

posted by Searcher7

18 comments posted 13yrs posted by Searcher7

Bose CD-3000 tablle radio/CD player sending dc to speaker.

This Bose CD-3000 tabletop player was brought to my attention because intermittently there were popping/static noise wa...

10 comments posted 13yrs

posted by farberbear.unspam

10 comments posted 13yrs posted by farberbear.unspam

E & L Instruments Inc. Adam 5005 Main Frame

I have one of these very old trainer breadboards that has several replaceab le modules. The problem I have is the funct...

4 comments posted 13yrs

posted by chrmiss

4 comments posted 13yrs posted by chrmiss